Improvement of Grain Boundary Tolerance by Minor Additions of Hf and B in a Second Generation Single Crystal Superalloy

Yunsong Zhao, Jian Zhang, Yushi Luo, Gang Sha, Longfei Li, Dingzhong Tang, Qiang Feng

Aero Engine Corporation of China (China)　University of Science and Technology Beijing　Nanjing University of Information Science and Technology　Nanjing University of Science and Technology